I contacted a school teacher who teaches English to class XII in a reputed CBSE school. Based on the course structure, exposure content and exercises, I got the following crucial insights:

1. Concepts of abstraction are not too vague for class XII students and can be discussed with them.
2. Need extensive visuals and realistic images as examples as much as possible, as students tend to skip over text and understand the most from visuals.
3. When talking about visual metaphors, it should be visually shown where they have been used.
4. In home exercise 2B, literal and easy words like sunrise, hunter and meadow could be removed. Giving more difficult words like perseverance, exhilarating and baffling to class XII students would make the exercise more challenging.
5. Abstraction exercise (Workbook 3) seems a bit kiddish and could be made more challenging.
6. Group discussions and brainstorming sessions should be added to the lesson plan, as it enables face to face discussion and piques student interest.
7. An exercise could be added for the Talamana grid, where the teacher could get a large print out of the grid.